DS75LV

Digital Thermometer and Thermostat

±2.0°C Accurate Digital Temperature Sensor Operates From a Supply of Only 1.7V to 3.7V


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Description

The DS75LV low-voltage (1.7V to 3.7V) digital thermometer and thermostat provides 9-, 10-, 11-, or 12-bit digital temperature readings over a -55°C to +125°C range with ±2°C accuracy over a -25°C to +100°C range. At power-up, the DS75LV defaults to 9-bit resolution for software compatibility with the LM75. Communication with the DS75LV is achieved through a simple 2-wire serial interface.

The DS75LV thermostat has a dedicated open-drain output (O.S.) and programmable fault tolerance, which allows the user to define the number of consecutive error conditions that must occur before O.S is activated. There are two thermostatic operating modes that control thermostat operation based on user-defined trip-points (TOS and THYST).

DS75LV: Functional Block Diagram DS75LV: Functional Block Diagram Enlarge+

Key Features

  • Extend Performance Range with Low-Voltage, 1.7V to 3.7V Operating Range
  • Maximize System Accuracy in Broad Range of Thermal Management Applications
    • Measures Temperature from -55°C to +125°C (-67°F to +257°F)
    • ±2°C Accuracy over a -25°C to 100°C Range
    • User-Configurable Resolution from 9 Bits (Default) to 12 Bits (0.5°C to 0.0625°C)
  • Easy Upgrade to LM75: Pin and Software Compatible
  • Simplify Distributed Temperature-Sensing Applications with Multidrop Capability
    • Up to Eight DS75LVs Can Operate on 2-Wire Bus
  • Increase Reliability and System Robustness
    • Internally Filtered Data Lines for Noise Immunity (50ns Deglitch)
    • Bus Timeout Feature Prevents Lockup on 2-Wire Interface
  • Minimize Power Consumption with Built-In Shutdown Mode
  • Flexible User-Defined Thermostatic Modes with Programmable Fault Tolerance

Applications/Uses

  • Any Thermally Sensitive System
  • Cellular Base Stations
  • Office Equipment
  • Personal Computers

See parametric specs for Temperature Sensors (113)


Part NumberSensor TypeInterfaceChannelsAccuracy
(±°C)
Parasite Pwr.Temp. Thresh.Temp. Resolution
(bits)
Multi DroppableOper. Temp.
(°C)
Package/PinsBudgetary
Price
See Notes
DS75LV Local2-Wire/I2C/SMBusOne2NoProgrammable
9
10
11
12
Yes-55 to +125
SOIC (N)/8
UMAX/8
$1.05 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Product Reliability Reports: DS75LV.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

 
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